JSAT release http://www.jsat.net
JCSAT-1B is located at 150.0°E
Technical Difficulties With Satellite Links to Communications Satellite
JCSAT-1B
JSAT Corporation (Head Office: Chiyoda-ku, Tokyo; President and CEO:
Kiyoshi Isozaki; 窶廱SAT窶・ wishes to report on the circumstances that
have been determined so far concerning technical difficulties with
satellite links due to an attitude anomaly experienced by the JCSAT-1B
communications satellite on July 22, 2005 at 15:32 JST, and its response
to the incident, as follows.
1. Current Situation
Anomaly detection: July 22, 2005 15:32 JST
At the above time, the JCSAT-1B communications satellite experienced an
anomaly involving a loss of attitude. As a result, all channels provided
by the satellite are unavailable.
2. Sequence of Events
15:32 Telemetry signals were lost following the loss of satellite
attitude during maneuver
15:42 Telemetry link was regained and quick look at satellite health
was initiated.
16:10 In cooperation with The Boeing Satellite Systems, Inc., the
satellite窶冱 manufacturer, measures were initiated to determine the
health of the satellite and investigate the cause of the incident.
3. Back-up Satellite
Preparations are underway to replace JCSAT-1B with JCSAT-R JSAT窶冱
back-up satellite.
4. Investigation Into the Cause of the Incident
JSAT is making every effort to determine the cause of the incident, but
will most likely require several more hours before the situation becomes
clear. It is unknown at present whether this incident is connected with
the previous anomaly in one of the thrusters on JCSAT-1B.
JSAT will report on new developments as they are confirmed. JSAT
apologizes to customers and asks for their understanding regarding this
incident.
--
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